Finding cockroaches in your home can be stressful. A cockroach infestation needs to be taken care of as soon as possible to prevent health concerns in the future. Roaches spread diseases like dysentery, salmonella, cholera, leprosy, and other serious diseases. The saliva that is secreted from roaches carries tons of allergens and can cause a serious allergic reaction to those with sensitive allergies. If roaches are not taken care of right away, they can quickly get out of hand since cockroaches reproduce very quickly and in large numbers.